Home / 82,717.20-114,112.80-55,851.12

Finding the Fourth Proportional to 82,717.20, 114,112.80 and 55,851.12

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Solution

The fourth proportional to 82,717.20, 114,112.80 and 55,851.12 is: 77,049.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,717.20 : 114,112.80 = 55,851.12 : x
  2. Step 2: Convert to fraction form
    82,717.20/114,112.80 = 55,851.12/x
  3. Step 3: Cross multiply
    82,717.20x = 114,112.80 × 55,851.12
  4. Step 4: Simplify right side
    82,717.20x = 6,373,327,686.34
  5. Step 5: Solve for x
    x = 6,373,327,686.34/82,717.20
  6. Step 6: Final answer
    x = 77,049.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.